We weigh travel eSIM brands for Cambodia on coverage, speed, reliability, which local carrier they ride, reach beyond Phnom Penh and Siem Reap, and fair use terms. Ranking is never for sale.
HelloRoam is Simscanner's top-ranked travel eSIM for Cambodia, with the cheapest sourced entry we tracked from $3.99. Unlike much of Europe, Cambodia does compel SIM registration: by law a passport or ID is recorded against every SIM, so a local prepaid SIM is registered at the kiosk, while a travel eSIM usually settles that step inside its own checkout. Coverage is strongest around Phnom Penh, Siem Reap and Sihanoukville and thins across the Cardamom highlands and remote provinces. Weigh the brands in the ranking below.
Modelled estimates. Winner appears after verification.
We grade each brand on how far it reaches, how fast it runs, how steady it stays, which Cambodian carrier carries it, how openly it states unlimited and fair use limits, how it handles the registration rule, and what reviewers report. Independent throughout, and never for sale.
A quick read of the field. Drop to the full grid lower down for reach, pace, steadiness, fair use, tethering, host carriers, and reviewer signals.
| Brand | Overall | Coverage | Speed | Unlimited |
|---|---|---|---|---|
HelloRoam |
92 |
89 |
92 |
Yes |
Airalo |
82 |
83 |
85 |
No |
Holafly |
87 |
87 |
82 |
Yes |
Nomad |
82 |
84 |
83 |
No |
Saily |
87 |
88 |
90 |
No |
Ubigi |
89 |
86 |
91 |
No |
84 |
83 |
89 |
No |
Swipe sideways to read every column. The brand name stays pinned on the left.
| Brand | Rank | Overall | Coverage | Speed | Reliability | Unlimited | FUP / fair use | Hotspot | Local networks | Review signal | Confidence | Action |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
HelloRoam |
1 | 92 |
89 |
92 |
Yes | Published no throttling; ~6 GB/day tested then ~1 Mbps (US) | Allowed | Metfone | 4.6 | Verified | See brand → Visit HelloRoam ↗ | |
Airalo |
6 | 82 |
83 |
85 |
No | No unlimited Cambodia plan | Allowed | Smart | 4.5 | Secondary | See brand → Visit Airalo ↗ | |
Holafly |
3 | 87 |
87 |
82 |
Yes | High-speed ~90 GB/month | Allowed | Metfone | 4.3 | Verified | See brand → Visit Holafly ↗ | |
Nomad |
7 | 82 |
84 |
83 |
No | No unlimited Cambodia plan | Allowed | Metfone | 4.1 | Secondary | See brand → Visit Nomad ↗ | |
Saily |
4 | 87 |
88 |
90 |
No | No unlimited Cambodia plan | Not stated | Smart | 4.4 | Secondary | See brand → Visit Saily ↗ | |
Ubigi |
2 | 89 |
86 |
91 |
No | No unlimited Cambodia plan | Allowed (data sharing) | Metfone | 4.3 | Verified | See brand → Visit Ubigi ↗ | |
| 5 | 84 |
83 |
89 |
No | No unlimited Cambodia plan | Not stated | Smart | 3.7 | Secondary | See brand → Visit Jetpac ↗ |
A travel eSIM brand sells the plan; a Cambodian carrier carries the signal. Whichever of the national networks a brand rides is what fixes your real-world coverage, your reach beyond the towns, and whether 5G appears. The grid further down maps each brand to its host carrier in Cambodia.
| Brand | Connected network | 4G / 5G | Main cities | Rural confidence | Source | Confidence |
|---|---|---|---|---|---|---|
HelloRoam |
Metfone | 5G/4G | Solid in the main cities | Rural: Medium | helloroam.com | Verified |
Airalo |
Smart | 4G/5G | Good metro coverage | Rural: Medium-high | esimdb.com | Secondary |
Holafly |
Metfone | 4G LTE/5G | Wide urban reach | Rural: High | holafly.com | Verified |
Nomad |
Metfone | 4G/5G | Wide urban reach | Rural: High | esimdb.com | Secondary |
Saily |
Smart | 4G/5G | Good metro coverage | Rural: Medium-high | esimdb.com | Secondary |
Ubigi |
Metfone | 3G/4G | Strong across major cities | Rural: Good | ubigi.com | Verified |
| Smart | 4G/5G | Wide urban reach | Rural: High | esimdb.com | Secondary |
Whether you must show identity papers comes from national law, not from the eSIM brand. Here is the verified position for Cambodia.
Cambodia sits on the Indochinese peninsula, bordered by Thailand to the northwest, Laos to the north, and Vietnam to the east, with a Gulf of Thailand coastline to the southwest.
The full grid of every brand and plan offered for Cambodia, with data, validity, price, host network, hotspot, KYC and top-up. Because brand pricing shifts often and loads client-side, Simscanner checks each row at source rather than estimating it. Every cell is sourced where the brand publishes it.
| Brand | Plan | Data | Validity | Price (USD) | Network | Hotspot | KYC | Top-up | Source |
|---|---|---|---|---|---|---|---|---|---|
HelloRoam |
Entry plan | 1 GB | 7 days | $3.99 | Metfone | Allowed | Not stated | Not stated | helloroam.com |
Airalo |
Entry plan | 1 GB | 3 days | $4.00 | Smart | Allowed | Not required | Not stated | esimdb.com |
Holafly |
Entry plan | Unlimited | 3 days | $12.50 | Metfone | Allowed | Not required | Not stated | holafly.com |
Nomad |
Entry plan | 1 GB | 7 days | $6.00 | Metfone | Allowed | Not required | Not stated | esimdb.com |
Saily |
Entry plan | 1 GB | 7 days | $5.99 | Smart | Not stated | Not required | Not stated | esimdb.com |
Ubigi |
Entry plan | 3 GB | 15 days | $9.00 | Metfone | Allowed (data sharing) | Not required | Not stated | ubigi.com |
| Entry plan | 1 GB | 4 days | $7.00 | Smart | Not stated | Not required | Not stated | esimdb.com |
The word "unlimited" rarely means limitless. Most brands attach a fair use policy that slows you once a daily or trip-long cap is hit. The grid below sets out that cap, the speed you drop to, and whether tethering is allowed.
| Brand | Unlimited? | High-speed allowance | Throttle after FUP | Hotspot | Policy clarity | Notes | Source | Confidence |
|---|---|---|---|---|---|---|---|---|
HelloRoam |
Yes | Published no throttling; ~6 GB/day tested then ~1 Mbps (US) | ~1 Mbps after ~6 GB/day (tested, US) | Allowed | Published no throttling; ~6 GB/day tested then ~1 Mbps (US) · ~1 Mbps after ~6 GB/day (tested, US) | helloroam.com | Verified | |
Airalo |
No | No unlimited Cambodia plan | n/a | Allowed | No unlimited Cambodia plan · n/a | esimdb.com | Secondary | |
Holafly |
Yes | High-speed ~90 GB/month | 256-1024 kbps | Allowed | High-speed ~90 GB/month · 256-1024 kbps | holafly.com | Verified | |
Nomad |
No | No unlimited Cambodia plan | n/a | Allowed | No unlimited Cambodia plan · n/a | esimdb.com | Secondary | |
Saily |
No | No unlimited Cambodia plan | n/a | Not stated | No unlimited Cambodia plan · n/a | esimdb.com | Secondary | |
Ubigi |
No | No unlimited Cambodia plan | n/a | Allowed (data sharing) | No unlimited Cambodia plan · n/a | ubigi.com | Verified | |
| No | No unlimited Cambodia plan | n/a | Not stated | No unlimited Cambodia plan · n/a | esimdb.com | Secondary |
How fast a travel eSIM feels in Cambodia depends on the town you are in and the carrier it has latched onto. The grid reports each brand's typical download, upload, latency and whether you are on 4G or 5G. Figures shown are modelled estimates.
| Brand | Avg download | Avg upload | Latency | 4G / 5G | City confidence | Reliability | Last reviewed |
|---|---|---|---|---|---|---|---|
HelloRoam |
81 Mbps | 24 Mbps | 31 ms | 5G/4G | High in main cities | Reviewed 15 Jun 2026 | |
Airalo |
64 Mbps | 19 Mbps | 40 ms | 4G/5G | Good in main cities | Reviewed 15 Jun 2026 | |
Holafly |
57 Mbps | 17 Mbps | 43 ms | 4G LTE/5G | Good in main cities | Reviewed 15 Jun 2026 | |
Nomad |
60 Mbps | 17 Mbps | 42 ms | 4G/5G | Good in main cities | Reviewed 15 Jun 2026 | |
Saily |
77 Mbps | 22 Mbps | 34 ms | 4G/5G | High in main cities | Reviewed 15 Jun 2026 | |
Ubigi |
79 Mbps | 23 Mbps | 33 ms | 3G/4G | Good in main cities | Reviewed 15 Jun 2026 | |
| 74 Mbps | 22 Mbps | 35 ms | 4G/5G | Good in main cities | Reviewed 15 Jun 2026 |
We model public ratings from the App Store, Google Play and Trustpilot, then surface the recurring themes travellers raise about each brand. Ratings and themes shown are Simscanner modelled estimates, not verified review counts.
Aggregate is a Simscanner modelled estimate across the tracked brands.
Brand-agnostic steps. The exact prompts vary by brand and handset, and brand-specific walkthroughs live on each brand profile.
Make sure your handset is eSIM-capable and carrier-unlocked before you buy a Cambodia plan. Recent iPhone and most flagship Android models qualify.
Pay for the plan, then load the eSIM by scanning its QR code or tapping one-tap install while on home Wi-Fi, ahead of your flight to Cambodia.
Pick the eSIM as your data line and enable data roaming for it so the profile latches onto a Cambodian network the moment you arrive.
Many Cambodia plans start counting validity when the eSIM first registers on a local network, so switch it on when you land in Phnom Penh or Siem Reap, not before.
Every brand earns a score across seven inputs. Coverage and local-network quality draw on public Cambodian-carrier sources. Speed and reliability draw on public network performance data. Review and FUP signals come from public brand and store pages. No brand can pay to rank higher.
Public Cambodian-carrier coverage data, mapped across Phnom Penh, Siem Reap, the coast and the remote provinces.
Public network performance sources, scoped to Cambodian cities such as Phnom Penh and Siem Reap.
Drop-off, time-to-connect, and uptime signals from public sources.
Clarity of allowance, throttle speed, daily high-speed cap, and hotspot rules on each plan.
Whether hotspot and tethering are allowed and on which Cambodia plans.
Which Cambodian network the brand rides: Metfone, Smart or Cellcard.
App Store, Play Store, and Trustpilot signals, weighted by recency.
Source quality, recency, and number of verified inputs per brand.
Straight answers to what Cambodia-bound travellers ask most. The wording lives in the page itself so both search engines and AI readers can lift it.
Cambodia requires every SIM to be registered against valid identity details, so a local prepaid SIM is registered in your name at the kiosk using your passport. The rule is enforced by the Telecommunication Regulator of Cambodia. With a travel eSIM the brand usually handles any identity step inside its own online checkout, so you rarely register at a counter. Confirm the brand's process first, and carry your passport.
Cambodia has three dominant networks: Metfone (Viettel-owned, the widest rural reach and largest subscriber base), Smart (Smart Axiata, fast urban 4G), and Cellcard (the only homegrown operator, launched 1997). Smaller players such as Yes and Cootel also exist. Most travel eSIMs ride Metfone, Smart or Cellcard. The local networks table on this page maps each brand to its Cambodian carrier once that mapping is verified.
Usually not. Cambodia is not in any roam-like-at-home zone, so a Cambodia-only plan generally stops working at the Thai, Vietnamese or Lao border. If your trip crosses several countries, look for a regional Southeast Asia or Asia-wide eSIM rather than a single-country Cambodia plan. Always check each brand's coverage list before you set off.
5G depends on the Cambodian network the eSIM rides and whether the plan includes it. Metfone, Smart and Cellcard all switched on 5G at the start of 2025, with the densest coverage around Phnom Penh, Siem Reap and other main cities. Simscanner publishes a modelled per-brand speed comparison for Cambodia in the speed section.
Buy the plan, then install the eSIM over home Wi-Fi by scanning its QR code or using one-tap install. Leave it set to start on first contact with a Cambodian network, switch data roaming on for that line, and make it your data line as you land in Phnom Penh or Siem Reap. Exact prompts differ by brand and device.
FUP is the fair use policy: the threshold past which a brand may slow an unlimited plan. On a Cambodia eSIM this often appears as a daily high-speed allowance before throttling. The plans table on this page lists each brand's allowance and throttle, and never carries an invented limit.
Every factual claim about Cambodia's networks, KYC position, currency, capital and region on this page is sourced below. Brand plan pricing is sourced per brand where the brand publishes it. All sources retrieved 30 May 2026.
AI-assisted disclosure. This page was drafted with AI assistance and reviewed by the Simscanner editorial team. Every network, KYC, currency, capital and region claim is cited above with its retrieval date. Brand plan pricing and coverage are sourced; per-brand scores and speeds are Simscanner modelled estimates.
Carry on with a bordering country, the wider region, a leading brand profile, or the way we score.